MRI features of ISCMs, per-lesion basis, total of 70 lesions in 49 patients
| Feature | Prevalence |
|---|---|
| Location (n = 70) | |
| Cervical | 16 (23%) |
| Cervicothoracic | 2 (3%) |
| Thoracic | 40 (57%) |
| Thoracic-conus | 1 (1%) |
| Conus | 11 (16%) |
| Position (n = 62) | |
| Central | 23 (37%) |
| Eccentric | 35 (56%) |
| Exophytic | 4 (6%) |
| Morphology (n = 66) | |
| Well-circumscribed | 64 (97%) |
| Ill-defined | 2 (3%) |
| Cord expansion (n = 70) | |
| Present | 44 (63%) |
| Absent | 26 (37%) |
| Enhancement (n = 64) | |
| Present | 63 (98%) |
| Absent | 1 (2%) |
| Enhancement pattern (n = 63) | |
| Homogeneous | 31 (49%) |
| Heterogeneous | 31 (49%) |
| Peripheral (ring) | 1 (2%) |
| Size of enhancing lesion, mm, mean (range) | |
| Anterior-posterior (n = 63) | 6.5 (1–16) |
| Transverse (n = 53) | 7.3 (2–23) |
| Superior-inferior (n = 63) | 19.9 (2–114) |
| Longitudinal extent, No. of vertebral segments, mean (range) | |
| Length of enhancement (n = 63) | 1.4 (1–8) |
| Length of cord T2 signal hyperintensity (n = 69) | 4.5 (1–15) |
| Ratio, T2 signal/enhancement (n = 63) | 3.6 (1–14) |
| T2 signal intensity (n = 70) | |
| Hyperintense | 55 (79%) |
| Hypointense | 1 (1%) |
| Isointense | 14 (20%) |
| T1 signal intensity (n = 63) | |
| Hyperintense | 10 (16%) |
| Hypointense | 5 (8%) |
| Isointense | 48 (76%) |
| Cystic change (n = 70) | |
| Intratumoral | 2 (3%) |
| Peritumoral | 0 (0%) |
| Intratumoral hemorrhage (n = 70) | 1 (1%) |